active+principle
121Arnica montana — Arnicin Ar ni*cin, n. [See {Arnica}.] (Chem.) An active principle of {Arnica montana}. It is a bitter resin. [1913 Webster] …
122Arnicin — Ar ni*cin, n. [See {Arnica}.] (Chem.) An active principle of {Arnica montana}. It is a bitter resin. [1913 Webster] …
123C10H14N2 — Nicotine Nic o*tine (? or ?), n. [F. nicotine. See {Nicotian}.] (Chem.) An alkaloid which is the active principle of tobacco ({C10H14N2}). It occurs in tobacco plants ({Nicotiana tabacum} and {Nicotiana rusticum}) to the extent of 2 to 8%, in… …
124Cantharidin — Can*thar i*din (k[a^]n*th[a^]r [i^]*d[i^]n), n. (Chem.) The active principle of the cantharis, or Spanish fly, a volatile, acrid, bitter solid, crystallizing in four sided prisms. [1913 Webster] …
125Cheese rennet — Rennet Ren net, n. [AS. rinnan, rennan, to run, cf. gerinnan to curdle, coagulate. [root]11. See {Run}, v.] 1. The inner, or mucous, membrane of the fourth stomach of the calf, or other young ruminant. [1913 Webster] 2. an infusion or preparation …
126Cicutoxin — Cic u*tox in, n. (Chem.) The active principle of the water hemlock ({Cicuta}) extracted as a poisonous gummy substance. [1913 Webster] …
127duboisine — Hyoscyamine Hy os*cy a*mine, n. [See {Hyoscyamus}.] (Chem.) An alkaloid found in henbane ({Hyoscyamus niger}), and regarded as its active principle. It is also found with other alkaloids in the thorn apple and deadly nightshade. It is extracted… …
128Ecballium agreste — Elater El a*ter, n. (Chem.) The active principle of elaterium, being found in the juice of the wild or squirting cucumber ({Ecballium agreste}, formerly {Motordica Elaterium}) and other related species. It is extracted as a bitter, white,… …